Experimental and Numerical Investigation of Convective Heat Transfer in a Circular Pipe with Internal Ring ribs
journal of kerbala university,
2014, Volume 10, Issue 1, Pages 122-131
AbstractThis paper studied an experimental and CFD investigation of heat transfer characteristics of horizontal circular pipe500mm long using internal rings ribs of 80mm width ,80mm height, n=7, p =100mm, with air as the working fluid. Reynolds number 31170 was taken. The steel pipe(ASM4120) was subjected to different constant surface temperatures(573,873,and 1173Ko). The experimental data obtained were compared with plain (without ribs)case. Based on the same coolant flow, the pipe with internal ring ribs was found to possess the highest performance factors for turbulent flow. The results show a good agreement between theoretical and experimental by factor 3.6%. The heat transfer rates obtained is 32.22times over the smooth channel. for a given Reynolds number. The use of internal ring ribs improved the heat transfer in circular pipe. All studies where carried out using workbench programFlUENT14.5.
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